This facility controls the huge amount of water and huge water pressure stored in the dammed lake. In addition to flood control, which is the main purpose of the dam, there are numerous facilities for various types of wa river flow rate, selective water intake equipment for intake of water at an appropriate temperature, and measures against turbid water in the dammed lake.

Tokuyama dam emergency flood discharge (crest radial 토토사이트 위키)

Main spillway in redevelopment project for Amagase Dam

• Main 토토사이트 위키 (radial 토토사이트 위키)
  • 3.6 meters wide × 4.9 meters high × 9.0 meters radius
  • 2 gates
• Branch pipes
  • Inlet 10.3 meters in diameter (1 line)/outlet 3.6 meters wide × 5.0 meters high (2 lines)
• Total length
  • 43미터

This 토토사이트 위키 controls river water, such as estuary weirs that maintain the water level at normal times and then allow river water to flow down quickly in the event of a flood, and gutters and flood river. There are also various other facilities such as locks that allow ships to come and go upstream and downstream of the estuary weir, fishway gates that assist fish in swimming upstream, and retarding basin locks that store river

• Nagashima water 토토사이트 위키 (horizontal roller 토토사이트 위키)
  • 14.0 meter wide × 14.6 meters high (2 gates)

• 도톤보리 강 워터 게이트
  • Left: Water control 토토사이트 위키 (2-stage roller 토토사이트 위키)
    12.5 meters wide × 6.8 meters high (1 토토사이트 위키)
  • Right: Downstream lock (submerge radial 토토사이트 위키)
    9.0 meters wide × 7.1 meter radius (1 토토사이트 위키)

A penstock transports water from a reservoir, etc., in a high location to a hydroelectric power plant in a low location. Since the water must drop all at once in order to generate power, the interior of the penstock is exposed to high press steep slopes, a penstock fulfills an important role for hydroelectric power generation.

• Ojiya power station, No. 3 penstock
  • Design water head of 74 미터
  • Extension of 78 미터
  • Inner diameter 3,350 to 4,500 millimeters

• The penstock of Higashiyokoyama hydropower station
  • Design water head of 119 meters
  • Extension of 62 meters × 4 pipes
  • Inner diameter of 1,200 to 1,500 millimeters

Dam renewal work is performed while the dam is operating at a high water level. Therefore, a temporary steel lid known as a "temporary closing facility" is installed on the upstream surface of the dam body to premed the downstream side when drilling holes in the dam body. 토토사이트 위키 is experienced in constructing a large number of temporary closing facilities. Based on that know-how, we have developed a floating temporary closing method.

• Tsuruta dam upstream temporary closing facility
  • For additional spillway facilities: Inner area 11.0 meters wide × 4.0 meters deep × 38.0 meters high
  • For power generation and water intake: Inner area 13.0 meters wide × 3.7 meters deep × 30.5 meters high
  • Floating temporary closing: Inner area 11.0 meters wide × 4.0 meters deep × 25.5 meters high